l33t1f13d - You make a word look like a chaotic number mess because you'

You make a word look like a chaotic number mess because you're trying to sound like a hacker from the 90s.

I leetified my username so hard it got banned from the internet.

My teacher leetified my test answer and it turned into a swear word.

I leetified my password and now I can't log in because it's too ugly.